EXPLANATION OF PLATES. 433 



81. Pholadomj-a (Liopistha) freqnens, Zittel. Cret.; Gosau, 152 

 88. Cimitaria corrugata, Coiir. Hamilton Group, N. Y., . 251 

 89-91. Maetra tnrg-rdn, Gmel. West Indies, . . .156 

 92-94. Maetra (Schizodesma) Spengleri, Linn, Cape of 



Good Hope, ....... 15Y 



95. Maetra (Hemimactra) solidissima, Chemn. N.Jersey, 15Y 



96. Maetra (Hemimactra) triangnla, Brocchi. Med. Sea, 15t 



97. Maetra (Ox^^peras) triangularis, Lam. East Indies, . 157 

 98-100. Maetra (Mulinea) edulis,King. Sts. of Magellan, 157 



1. Maetra (Mactrinula) plicataria, Linn. Indian Ocean, 157 

 2-4. Maetra (Mactrella) alata,Spengler. West Columbia, 157 

 5,6. Maetra (Harvella) elegans, SoM'b. Panama, . . 158 



7. Rangia cyrenoides, Desmonl. New Orleans, . . 158 



8. Lutraria oblonga, Gmel. Europe, . . . .159 



9. Lutraria (Darina) solenoides. King, .... 159 



Plate 110. 



10. Lutraria (Yanganella) lanceolata, Gray. New Zealand, 160 



11. Lutraria (Zenatia) acinacies, Quo3^ New Zealand, . 159 



12. Lutraria (Csecella) turgida, Deshayes. Philippines, . 159 



13. Anatinella Candida, Chemn. Ceylon, .... 160 



14. Anatinella Sibbaldi, Sowb. Japan, . . . .160 



15. Cardilia Martinii, Desh. Malacca, . . . .160 



16. Cardilia semisulcata, Lara. Amboina, . . .160 



17. Cardilia inerm^, Desh. Sumatra, .... 160 



18. Heterocardia gibbosula, Desh. Indian Ocean, . .160 



19. Pteropsis papj^ria, Conr. Eocene; Alabama, . .160 



20. Tresus maximus, Middendorff. California, . . 161 



21. Schizothserus Nuttalli, Conrad. California, . . 161 



22. Mactromeris ovalis, Gould. Massachusetts, . . 157 



23. Standella (Merope) JEgyptica, Chemn. Ceylon, . 161 



24. Labiosa lineata. Say. South Carolina, . . . 161 



25. Labiosa (Eaeta) canaliculata, Say. Atlantic Coast of 



the United States, . . . . . . .161 



26. Paphia trigona, Desh, . . . . . . .161 



27. Paphia (Mesodesma) erycina. Lam. Singapore, . 162 



28. Paphia (Taria) lata, Desh. New Zealand, . . . 162 



29. Paphia (Ceronia) Jauresii, Joannis. Newfoundland, . 162 



30. Paphia (Donacilla) donaeilla. Lam. Mediterranean, . 162 



31. Paphia (Anapa) cuneata. Lam, New Zealand, . . 162 



32. Paphia (Davilla) crassula, Desh., . . . . .162 



33. Ervilia castanea, Mont. England, .... 162 



34. Semele variegata. Lam. Brazil, 163 



35. Semele reticulata, Chemn, West Indies, . . .163 



36. Syndosmya alba. Wood. England, .... 163 



37. Syndosmya brevis, Desh. Fossil, Paris Basin, . . 163 



